This week's Medical Device Reading List is all about pain! Medtronic ($MDT) and Boston Scientific ($BSX) are making strides AGAINST pain, each gaining FDA approvals for new pain management devices. On the other hand, $BSX and Becton Dickinson ($BD) are FEELING the pain: $BSX announced a sensor glitch that can cause pacemaker malfunctions and $BD received a sharp warning letter following a two-month FDA investigation.